Reading shouldn't feel this hard.
Nook is a free Chrome extension that
helps you stay focused,
keep your place, and finish what you read online.
Why reading online is exhausting
The problem isn't your attention span.
It's how text is presented.
Losing your place
Your eyes lose their place every time you scroll, forcing you to constantly re-scan to find where you left off.
Visual noise
Ads, popups, and cluttered sidebars fight for your attention, breaking your focus every few seconds.
Constant regression
You find yourself rereading the same sentence three times because your brain didn't catch it the first time.
Overwhelming walls of text
Long, dense paragraphs feel like a chore before you even start. The sheer volume of text makes your brain want to skim or skip.
Mental fatigue
Reading online feels significantly slower and more draining than reading a physical book, leading to faster burnout.
Nook changes how text behaves—so your brain can follow.
Preview how each feature works below.
Then install Nook to use it on everything you read.
Autopace
Moves text at your rhythm so your eyes always have a guide to follow.
Bionic reading guides the eye through text.
Bionic Text
Highlights word beginnings to help your brain recognize words faster.
Large walls of text are hard to track and easy to lose focus on. When you face a dense block of information, your brain naturally feels overwhelmed before you even begin reading.
Breaking content into bite-sized chunks improves comprehension significantly. By focusing on one piece at a time, you reduce cognitive load and absorb information more effectively.
Your brain processes information faster when it's not overwhelmed. This method keeps your momentum going, preventing the urge to skim or skip important details.
Chunking (Paragraphs)
Breaks long content into manageable paragraphs so you never feel overwhelmed.
One line at a time
keeps your focus
sharp and clear.
Chunking (Lines)
Focus on just one line at a time to prevent line-skipping and regression.
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Specialized Fonts
Choose from 7 specialized fonts including OpenDyslexic, Atkinson Hyperlegible, and Lexend to match your reading style.
Relax your eyes
Calm Backgrounds
Choose from 8 calm backgrounds including sepia, dark mode, and mint to reduce eye strain.
Every feature is grounded in research
Peer-reviewed studies from Adobe Research, Brown University, Google, and more.
ACM CHI — Adobe Research & Brown University
2023
“Reading speed, comprehension, and preference all improved with digital reading rulers”
Readers with dyslexia saw the largest gains. Rulers reduced eye strain and fatigue.
Learning and Instruction
2024
“Guided reading fully closed the comprehension gap between ADHD and non-ADHD readers”
Stage-by-stage reading guidance eliminated performance differences entirely.
Journal of the International Neuropsychological Society
2025
“Guided word presentation boosted ADHD reading comprehension by removing eye-movement interference”
Eye movements themselves impair reading in ADHD — sequential presentation eliminates that barrier.
Learning and Individual Differences
2023
“Attention — not vocabulary, not memory — is the #1 predictor of reading comprehension in ADHD”
Tools that guide and sustain focus directly address the single biggest barrier.
RSVP Research — Meta-analysis
2023
“0% comprehension loss at up to 350 WPM with paced reading”
No significant difference vs. self-paced reading at moderate speeds.
Reading and Writing — Springer
2023
“Higher comprehension scores when text is shown sentence-by-sentence vs. full-page”
Segmented presentation outperformed traditional full-page layouts in young readers.
BMC Psychology — Springer
2023
“Segmented content significantly reduced cognitive load and improved comprehension + retention”
Also enhanced vocabulary acquisition across all test stages.
Journal of Educational Psychology
2024
“Structured reading breaks maintained comprehension — without them, it declined”
Trained readers held steady while the untrained control group got measurably worse over time.
Visible Language — Literature Review
2022
“Beyond 75 characters per line, readers lose track and perceive text as overwhelming”
Optimal reading range is 50–75 characters. Too-short lines also disrupt eye movement flow.
Psychonomic Bulletin & Review — Meta-analysis
2022
“Mind wandering negatively correlates with comprehension (r = −0.21) and worsens with age”
Breaking text into chunks creates natural re-engagement points that interrupt drift.
Cambridge Handbook of Multimedia Learning
3rd Ed.
“Deeper understanding when content is presented in manageable segments vs. continuous streams”
Mayer's Segmenting Principle — a foundational multimedia learning principle backed by decades of research.
Google Fonts — Lexend Research
2019
“20% faster reading speed with the Lexend font”
Designed by Dr. Bonnie Shaver-Troup to reduce visual crowding between letters.
PNAS — Zorzi, Barbiero & Facoetti
2012
“20% faster reading and 50% fewer errors with extra letter spacing for dyslexic readers”
Improvement equal to one full year of reading development. Replicated across two languages.
Anglia Ruskin University
2021
“13% faster reading speed for dyslexic children with wider letter spacing”
Also significantly reduced the number of words skipped while reading.
ACM Transactions on Computer-Human Interaction
2022
“35% reading speed difference between best and worst font — no single font suits everyone”
Different fonts suit different readers. Comprehension was unaffected by font choice.
TAY Journal — Karatay & Ünal
2023
“Improvement across all 4 measures with OpenDyslexic: speed, accuracy, prosody, comprehension”
Researchers recommended including OpenDyslexic in school textbooks.
Nature Communications — Pelli et al.
2025
“Visual crowding — letters too close together — is a neurological cause of reading slowness in dyslexia”
Crowding distance varies 2× between people and correlates with brain structure.
Frontiers in Language Sciences
2025
“Blue overlay filters reduced fixation time and increased reading speed in dyslexic children”
Eye-tracking confirmed shorter fixations and longer saccades vs. no filter.
Ophthalmic & Physiological Optics — Wilkins
2002
“25% faster reading with a colored overlay for children with visual stress”
About 5% of mainstream students show this benefit. Not attributable to placebo.
Education and Information Technologies — Meta-analysis
2026
“Screen reading lags print by 0.48 SD — but the gap drops to just 0.03 SD without scrolling”
Controlling text presentation nearly eliminates the digital reading disadvantage.
From our
community on
Here's what other users had to say about Nook.
AutoPace is a game-changer. I no longer lose my place while reading, and I've actually finished three books this month!”
What changes when reading finally works
The struggles that disappear.
Read 2x faster
Visual guides keep your momentum high. You finish articles while others are still scrolling.
Stop re-reading
Autopace pulls you forward. No more getting stuck and reading the same line three times.
Better comprehension
Information stays in your brain because you're processing it in chunks, not walls of text.
Finish what you start
Seeing your progress hit 100% is addictive. You'll actually finish the books you start.
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Your brain, your rules
Adjust fonts, colors, speed, and spacing to match your unique brain.
Zero distractions
Ads and clutter kill focus. We stripped out everything that pulls you away.
Frequently asked questions
Everything you need to know about Nook
Nook is designed for long-form text. You can import articles using a URL or upload books (EPUB) and files (PDFs).
Nook handles files with long-form text the best — books and articles. Nook isn't ideal for magazines or other heavily illustrated documents.
Yes! You get a 7-day free trial with full access to all features — unlimited articles, books, and PDFs. No credit card required.
Absolutely. You can cancel your subscription at any time with no questions asked. Plus, there's a 30-day money-back guarantee if you're not satisfied.
Yes, Nook works on any device with a web browser — phone, tablet, or computer. Your reading progress syncs automatically across all your devices.
Bionic reading highlights the beginning of words to help your eyes glide through text faster. Autopace automatically scrolls the content at your preferred speed, so you can read hands-free without losing your place.
Nook was built by someone with ADHD who was frustrated by every other reading app. Features like autopace, chunking, and distraction-free mode exist because standard readers failed us too. Try the free trial and see for yourself.
We hear this constantly. Most reading apps are built for neurotypical brains. Nook is different — every feature is designed to reduce the mental effort of reading, not add to it. Try the free trial and see for yourself.
Unlike generic readers, Nook is built specifically for how ADHD brains work. Every feature — from bionic text to autopace to chunking — is designed to reduce friction and help you actually finish what you start reading.
Still have questions?
Contact us